The Heated space is determined by taking the dimensions of the property. New technologies such as Renewable Energy and Low Carbon are included where present. Examples of this would be Solar Panels, Solar Water, Wind Turbines and Biomass heaters.
Places where heat can escape from such as open flues, external doors, windows and open fire places etc are noted.
Energy Efficiency Rating (EER) − based on fuel costs.
Environmental Impact Rating (EIR) − based on carbon emissions.
The above Energy Ratings are determined mathematically by the software which also includes the EPC report.
Energy efficient improvements in the form of recommendations from the DEA are also included in the EPC report to each recommendation and itemised together with a value that shows the extent to which the rating could potentially increase. Where improvements are carried out based on recommendations a revised EPC can be issued to reflect the new rating value. All issued EPC’s are lodged on a Government database and are valid for 10 years.